2479638407 has 4 divisors (see below), whose sum is σ = 2479754376. Its totient is φ = 2479522440.

The previous prime is 2479638397. The next prime is 2479638431. The reversal of 2479638407 is 7048369742.

2479638407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2479638407 - 2⁴ = 2479638391 is a prime.

It is a super-2 number, since 2×2479638407² = 12297213258938995298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2479608407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15569 + ... + 72122.

It is an arithmetic number, because the mean of its divisors is an integer number (619938594).

Almost surely, 2^2479638407 is an apocalyptic number.

2479638407 is a deficient number, since it is larger than the sum of its proper divisors (115969).

2479638407 is an equidigital number, since it uses as much as digits as its factorization.

2479638407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115968.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The square root of 2479638407 is about 49795.9677785260. The cubic root of 2479638407 is about 1353.5141016038.

The spelling of 2479638407 in words is "two billion, four hundred seventy-nine million, six hundred thirty-eight thousand, four hundred seven".